\t My computer shuts off or crashes when I print

I have a HP Pavillion 400f Elite computer. Suddenly, my HL-2040 Brother Laser printer is causing my computer to crash when I call for it to print. Cpu is AMD, 8 GB RAM, Windowsm 7, 64 bit. Just reinstalled latest driver from Brother, no help.

Printer is fed A/C through a desktop power managment device, which is in turn connected to an APC 550 UPS. I did have a power failure several weeks ago and this problem seems to have started just after that. The printer prints even though the computer has crashed. The computer power light remains on. Any suggestions?